JP3072371B2 - Reinforcing bars for building structure slabs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a reinforcing bar for a building structure slab which can be used for a reinforcing structure for a building structure slab.

[0002]

2. Description of the Related Art Conventionally, reinforcing arrangement of reinforcing bars of a concrete slab is performed by firstly mounting a spacer having a height corresponding to the concrete covering thickness on the lower end reinforcing bar on a formwork of the concrete slab, and a unit area (m) of the concrete slab. ² ) Install one bar at a time, and arrange a lower reinforcing bar on top of it.
Next, as in the case of installing the lower end reinforcing bar, one spacer having a height such that the thickness of the concrete covering the upper end reinforcing bar when supporting the upper end reinforcing bar is appropriate is provided per unit area (m ² ) of the concrete slab. And the upper end rebar is laid on it. Also, when the concrete slab is a hollow slab, after the reinforcement arranging the bottom reinforcement, the worker of the void material maker arranges and fixes the void material on the lower reinforcement at a predetermined position, and then again The above-described reinforcing bar lays the upper reinforcing bar on the void material.

[0003]

However, the rebar arrangement work for the above-mentioned building structure slab still has the following problems to be solved. That is, since the above-mentioned construction is performed at a construction site, the worker needs a certain degree of technical knowledge and skill as a reinforcing steel work. In addition, since it is the work of connecting the reinforcing bars one by one on site, the construction period was considerably long. In addition, when the concrete slab is a hollow slab, additional work of laying a void material is added, so as described above, a worker for fixing the void material is required in addition to the reinforced work, and complicated construction work is required. It is necessary to arrange the bars according to the procedure. For this reason, there has been a problem that work efficiency is poor, a command and command system is complicated, and management work is increased.

[0004] The present invention has been made in view of such circumstances, and even if a worker does not have special skills, it is possible to easily and surely perform the rebar arrangement for a reinforced concrete slab, and It is an object of the present invention to provide a reinforcing bar for a building structure slab, which can significantly reduce a construction period in the building.

[0005]

According to the present invention, there is provided a reinforcing member for a building structure slab according to the present invention, comprising: a first reinforcing member for a building structure slab arranged in combination in a predetermined arrangement; The reinforcing member for building structure slab and the third reinforcing member for building structure slab provided adjacent to the reinforced concrete beam can be connected to the whole via these connecting portions. The overall width of each of the first to third building structure slab reinforcement units is 2.5 m or less, and the length is 12 m or less. The reinforcing bar unit for building structure slabs has a flat upper reinforcing bar grid and a lower reinforcing bar grid formed by intersecting a plurality of main reinforcing bars and a plurality of reinforcing bars in a lattice shape and fixing and connecting the intersections. ,
A spacing member for connecting the upper reinforcing grid and the lower reinforcing grid while maintaining a parallel spacing, wherein the lower reinforcing grid is provided on both sides of the lower reinforcing grid of the first building structure slab reinforcing unit. Connecting ends each having a length greater than 40 times the diameter of the reinforcing bars of the second reinforcing member are provided on one side of the upper reinforcing bars of the second reinforcing member for building slabs. A connecting end portion having a length greater than 40 times the diameter of the reinforcement is provided, and the other side of the lower reinforcement lattice of the second building structure slab reinforcement unit has a diameter of a reinforcement bar of the lower reinforcement lattice. A connecting end having a length greater than 40 times the length of the third building structure, and a connecting end provided on one side of the upper reinforcing bar lattice of the third building structure slab arrangement unit; On the other side of the reinforcement bars of the lower reinforcement lattice, the lower reinforcement Become a distribution force muscle diameter 10 times greater than the length or 150mm or more, the connecting end portion is provided for connecting the reinforced concrete beam, further, the first
~ Inside the third building structure slab reinforcement unit,
Each void material is fixedly attached

Here, the fixed connection of the intersection can be performed by welding or using a binding tool such as a clip hardware or a binding wire. In addition, as a spacing member, a flat bar,
Angle members, channel members, and the like can be suitably used. In addition, the main reinforcement and / or the connection end of the distribution muscle of the building structure slab reinforcement unit and the main reinforcement and / or distribution muscle of the adjacent building structure slab reinforcement unit having the same configuration. Can be performed by superimposing each other or abutting end faces together, adding a reinforcing bar having an effective connection length separately along the abutting portion, and then pouring concrete. However, if necessary, the main reinforcing bars and / or connecting ends of the reinforcing bars of the building structure slab reinforcing unit and the main reinforcing bars and / or the adjacent reinforcing bars of the building structure slab reinforcing unit having the same configuration.
Alternatively, the above-described connection can be further strengthened by binding or welding the force distribution bars using a binding tool such as a clip hardware or a binding wire.

[0007] Such a reinforcing bar unit for building structure slabs can be mass-produced in advance at a production factory. Then, at the time of construction, as many as necessary are transported to the construction site, these building structure slab reinforcement units are placed on the concrete slab formwork, and the main reinforcement of each building structure slab reinforcement unit is installed. And / or connecting the connecting end of the reinforcing bars to the main reinforcing bars and / or the reinforcing bars of the adjacent reinforcing bars for building slabs, which are also arranged on the formwork of the concrete slab; By fixing to the main force bars and / or the force distribution bars, the reinforcement bars for the building structure slab can be easily constructed. Also,
In the building structure slab reinforcing bar unit having the above-described configuration, the void material is fixedly mounted inside the building structure slab reinforcing unit. In this case, the reinforcement for void slab can be easily constructed.

As described above, by using a plurality of building structure slab reinforcing units each having a different shape, the plurality of building structures are adapted to the shape of the construction surface on the formwork of the concrete slab at the construction site. The reinforcing bars for building structures can be constructed while appropriately combining the reinforcing units for building structures with slabs, that is, the degree of freedom can be increased. Streaks can be constructed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. First, with reference to FIG. 1 and FIG. 2, according to an embodiment of the present invention, regarding a building structure slab reinforcing bar 13 formed by connecting building structure slab reinforcing units 10 to 12. explain. As shown in FIG.
Are long rectangular frames having a predetermined thickness, each having a space therein and extending in the vertical direction or the longitudinal direction (the depth direction on the paper surface of FIG. 1). Then, by connecting these building structure slab reinforcing bars 10 to 12 in the horizontal direction, the building structure slab reinforcing bars 13 can be constructed on the formwork 14 of the concrete slab. As shown in the figure, in the present embodiment, the building arrangement slab reinforcement unit 11 is disposed in the horizontal direction (the left-right direction on the paper surface of FIG. 1) with the building arrangement slab reinforcement unit 10 being the center. And 12 are symmetrically arranged,
Further, the outer side of the building structure slab reinforcement unit 12 is provided adjacent to the reinforced concrete beam 12a.

Next, with reference to FIG. 3 to FIG. 6, reinforcing bar units 10-1 for building structure slabs having different shapes.
2 will be described. FIG. 3 shows a detailed configuration of the building structure slab reinforcing bar unit 10 that forms a central portion in the building structure slab reinforcing bar 13 shown in FIGS. 1 and 2. As shown in FIGS. 1 to 3, the reinforcing bar unit 10 for a building structure slab is an example of two flat reinforcing bars arranged at parallel intervals in the vertical direction. , 16 are connected by welding or the like via spacing members 17 and 18 formed of angle members that are connected while maintaining the above-described spacing.

In the above structure, the upper reinforcing grid 15
Is a plurality of main muscles 20 arranged in parallel in the horizontal direction (the left-right direction on the plane of FIG. 3) and these main muscles 2
A plurality of force bars 19 arranged at parallel intervals in the vertical direction (depth direction on the paper surface of FIG. 3) orthogonal to 0 intersects in a grid pattern, and the intersections are fixedly connected by welding or the like. Is formed. On the other hand, the lower reinforcing grid 16
Are a plurality of main force bars 22 arranged in parallel in the horizontal direction (left-right direction on the paper surface of FIG. 3),
A plurality of force-distributing muscles 21 arranged at parallel intervals in the vertical direction (the depth direction on the paper surface of FIG. 3) orthogonal to 2 intersects in a grid pattern, and the intersections are fixedly connected by welding or the like. Is formed.

As shown in FIGS. 1 to 3, both ends of the lower reinforcing bar grid 16 are projected laterally so that the connecting ends 23, 2
4 are formed. Then, as shown in FIG. 3, when the effective dimension of the building structure slab reinforcement unit 10 is A, the projecting amounts A ₁ and A ₂ of the connection ends 23 and 24 are determined by the distribution of the lower reinforcing bar lattice 16. It is set to be larger than 40 times the diameter d of the streak 21. However, in consideration of the road transport safety standards, the overall width A ₀ of building structures slab reinforcement unit 10 is desirably kept below 2500 mm. Also,
Overall length of reinforcing bar unit 10 for building structure slab (FIG. 3
It is desirable that the maximum length is, for example, 12 m in consideration of road transport security standards and the dimensions of ordinary buildings.

FIG. 4 shows details of the building structure slab reinforcing bar unit 11 connected adjacent to the building structure slab reinforcing unit 10 in the building structure slab reinforcing bar 13 shown in FIG. 1 and FIG. A simple configuration is shown. As shown in FIGS. 1 and 4, the building structure slab reinforcing bar unit 11 is also an example of two flat bar reinforcing bars arranged at parallel intervals in the vertical direction. , 26 are connected by welding or the like via spacing members 27, 28, which are angle members that are connected while maintaining the above-described spacing. In the above-described configuration, the upper reinforcing bar grid 25 includes a plurality of main reinforcing bars 30 arranged in parallel in the horizontal direction (the left-right direction on the paper surface of FIG. 4).
And a plurality of distributing muscles 29 arranged at parallel intervals in the vertical direction (the depth direction on the paper surface of FIG. 4) orthogonal to the main muscles 30 and intersect in a grid pattern, and the intersection is welded or the like. Is formed by fixed connection.

On the other hand, the lower rebar lattice 26 is composed of a plurality of main rebars 32 arranged at parallel intervals in the horizontal direction (left and right directions on the paper surface of FIG. 4) and a vertical direction orthogonal to the main rebars 32 ( It is formed by intersecting a plurality of force-distributing muscles 31 arranged at parallel intervals in the depth direction on the paper surface of FIG. 4 in a grid pattern and by fixedly connecting the intersections by welding or the like. As shown in FIG. 4, one end of the upper rebar lattice 25 is protruded to one side (to the left in FIG. 4) to form a connection end 33, and the other end of the lower rebar lattice 26 is formed. The connecting portion 34 is formed by projecting the portion to the other side (rightward on the paper surface of FIG. 4).

If the effective size of the reinforcing bar unit 11 for building structure slabs is B, the projecting amounts B ₁ , B ₂ of the connecting ends 33, 34 are respectively equal to the upper and lower reinforcing bars 25, 26. It is set to be larger than 40 times the diameter d of the distribution muscles 29, 31. However, in consideration of the road transport safety standards, the overall width B ₀ of a building structure slab reinforcement unit 10 is desirably kept below 2500 mm. In addition, the total length (depth length on the paper surface of FIG. 4) of the building structure slab reinforcing bar unit 11 is set to, for example, a maximum of 12 m in consideration of road transport security standards and dimensions of a normal building. Is desirable.

In FIG. 5, one side of the building structure slab reinforcement 13 shown in FIGS. 1 and 2 is connected adjacent to the building structure slab reinforcement unit 11, and the other side is reinforced concrete beam. The detailed structure of the reinforcing bar unit 12 for building structures slab connected adjacent to 12a is shown. As shown in FIGS. 1 and 5, a reinforcing bar unit 1 for a building structure slab.
2 is also an example of two flat reinforcing bars arranged at parallel intervals in the vertical direction, and upper and lower reinforcing bars 35, 36.
They are connected by welding or the like via spacing members 37 and 38 formed of angle members that are connected while maintaining the above-described spacing.

In the above configuration, the upper rebar grid 35
Is a plurality of main force bars 40 arranged at parallel intervals in the horizontal direction (the left-right direction on the paper surface of FIG. 5);
A plurality of force distribution bars 39 arranged at parallel intervals in the vertical direction perpendicular to 0 (the depth direction on the paper surface of FIG. 5) are intersected in a grid pattern, and the intersections are fixedly connected by welding or the like. Is formed. On the other hand, the lower reinforcing grid 36
Is a plurality of main force bars 42 arranged at parallel intervals in the horizontal direction (the left-right direction on the paper surface of FIG. 5), and
A plurality of force-distributing muscles 41 arranged at parallel intervals in the vertical direction (the depth direction on the paper surface of FIG. 5) orthogonal to 2 intersects in a grid pattern, and the intersections are fixedly connected by welding or the like. Is formed.

Also, as shown in FIG.
Is protruded to one side (to the left in FIG. 5) to form a connection end 43a, and the lower reinforcing grid 36
Is protruded to the other side (to the right in FIG. 5) to form a connection end 43. And when the effective dimension of the building structure slab reinforcement unit 12 is C,
The projecting amount C ₁ of the connecting end 43 is set to be larger than 10 times or 150 mm or more of the diameter d of the distributing bar 41 of the lower reinforcing bar lattice 36, and the projecting amount C of the connecting end 43 a is set.
₂ is set to be larger than 40 times the diameter d of the distribution bars 39 of the upper rebar lattice 35. However, in consideration of the road transport security standards, it is desirable that the overall width C ₀ of the building structure slab reinforcement unit 12 be suppressed to 2500 mm or less. In addition, the total length (depth length on the paper surface of FIG. 5) of the building structure slab reinforcement unit 12 is, for example, a maximum of 12 in consideration of road transportation security standards and dimensions of a normal building.
m is desirable. In the drawing, reference numerals 44 and 45 are a main force bar and a distribution force bar of the reinforced concrete beam 12a, respectively.

Next, a method of constructing the reinforcing bars 13 for the slabs of the building structure using the reinforcing bars 10, 11, 12 for the slabs of the building structure will be described in particular with reference to FIGS. 1 and 2.
This will be specifically described with reference to FIG. (1) First, the building arrangement slab reinforcement units 10 to 12 having different shapes are produced in large quantities in advance in a production factory. (2) When constructing the reinforcing bars for building structure slabs at the specified building location, a necessary number of these reinforcing bars for building structure slabs 10 to 12 are carried into the construction site using a truck or the like.

(3) Using a crane or the like, these building arrangement slab reinforcing units 10 to 12 are combined one by one at predetermined positions on the concrete frame 14 of the concrete slab in a predetermined arrangement. At this time, the connecting ends 23, 24, 33, 34 of the building structure slab reinforcement units 10 to 12,
43a and 43 are, for example, the distribution bars 31 of the lower rebar lattice 26, the distribution bars 31 of the lower reinforcement lattice 26, and the distribution forces of the upper reinforcement lattice 25 of the adjacent building structure slab reinforcement units 10 to 12, respectively. Reinforcing bars 3 of bars 29, lower rebar grids 26, 36
1, 41, are arranged so as to be superposed on the distribution bars 19, 29 of the upper reinforcement grids 15, 25, and are fixed to the main reinforcement 44 (or distribution muscle 45) of the reinforced concrete beam 12a. In addition, each building structure slab reinforcement arrangement unit 10
Both ends in the longitudinal direction of 12 are erected on a reinforced concrete beam (not shown).

(4) Thereafter, if necessary, the connection ends 23, 2 of the reinforcing bars 10 to 12 for the slabs for the building structures are used.
4, 33, 34, and 43a are connected to the reinforcing bar lattices 26 of the adjacent building structure slab reinforcing units 10 to 12, respectively.
Of the lower rebar grid 26, the rebars 19 and 29 of the upper rebar grids 15 and 25, the lower rebar grids 26 and 3,
6, the force bars 31, 41, and the upper wire grid 25, the force bars 29
Then, binding is performed using a binding tool such as a binding wire, and the construction of the building structure slab reinforcement 13 is completed. In the construction of the above-mentioned reinforcing bars 13 for building structure slabs, in FIG.
Although the connecting end portions 23, 24, 33, 34, 43a are bent in the vertical direction and then overlapped in the vertical direction, actually, they are shifted in the horizontal direction by the diameter d of these reinforcing bars, Polymerization is performed on the same horizontal plane.

As described above, the reinforcing bars for building structure slabs 10 to 10 can be mass-produced in advance at the production plant.
By using 12, even a worker who does not have special skills can easily and reliably perform the reinforcement arrangement for the reinforced concrete slab, and can significantly reduce the construction period on site.

In particular, by using a plurality of building structure slab reinforcement units 10 to 12 having different shapes, the concrete slab formwork 14 at the construction site is used.
According to the shape of the upper construction surface, the building structure slab reinforcement 13 can be constructed while appropriately combining the plurality of building structure slab reinforcement units 10 to 12, that is, increasing the degree of freedom. Accordingly, it is possible to more easily, reliably, and in a short period of time to provide the reinforcing bars for building structure slabs.

FIG. 6 shows a modification of the reinforcing bar units 10 to 12 for slabs of a building structure. As shown in the drawing, the reinforcing bar unit 46 for a building structure slab according to the modification has substantially the same configuration as that of the reinforcing bar unit 12 for a building structure slab, and has a longitudinal direction (in FIG. , And long void members 47 and 48 extending in the depth direction are attached at parallel intervals in the width direction. The same constituent members as those of the building structure slab reinforcing bar unit 12 are denoted by the same reference numerals. That is, as shown in the drawing, the void members 47 and 48 having a circular cross section made of a hard plastic such as foamed polystyrene are interposed between the upper and lower reinforcing bars 35 and 36 and integrated with the upper reinforcing bars 35. Are fixed in a skewered manner by the comb-shaped holding hardware 49, 50 fixed to the surface.

By using the reinforcing bar unit for building structure slab 46 and the reinforcing bar unit for building structure slab in which the same void material is attached to the reinforcing bar unit for building structure slab 10 and 11 described above. The so-called void slab reinforcement, which can reduce the amount of concrete used, can be easily and reliably performed even by workers without special skills, and the construction period on site can be significantly reduced.

In the above-described embodiment, as shown in FIG. 2, the building arrangement slab reinforcement arrangement units 10 to 12 which are long in the longitudinal direction are used.
However, as shown in FIG. 7, as shown in FIG.
Thereafter, by arranging them in the left and right directions and connecting them via connecting ends, the reinforcing bars for building structure slabs 54 can also be constructed.

As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described.

[0028]

According to the reinforcing bar for building structure slab according to the first aspect, it is possible to use a reinforcing bar unit for building structure slab which can be mass-produced in a production factory in advance, and connect these to connecting ends. Since the reinforcement for building structure slabs can be constructed simply by connecting through the parts, even workers who do not have special skills can easily and reliably perform the construction of reinforcement for reinforced concrete slabs, The construction period on site can be greatly reduced. And
By mounting the void material in a fixed state inside the building structure slab reinforcement unit, the so-called void slab reinforcement that can reduce the amount of concrete used can be easily and reliably installed even by workers without special skills. It can be performed, and the construction period on site can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a reinforcing bar for a building structure slab according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front sectional view of a reinforcing bar unit for a building structure slab.

FIG. 4 is a front sectional view of another reinforcing bar unit for a building structure slab.

FIG. 5 is a front sectional view of a reinforcing bar unit for a building structure slab.

FIG. 6 is a front sectional view of a reinforcing bar unit for a building structure slab.

FIG. 7 is a front sectional view of a reinforcing bar for a building structure slab according to a modification of the embodiment of the present invention.

[Explanation of symbols]

10: Reinforcement unit for building structure slab, 11: Reinforcement unit for building structure slab, 12: Reinforcement unit for building structure slab, 12a: Reinforced concrete beam, 13: Reinforcement unit for building structure slab, 14: Concrete slab formwork, 15: upper reinforcing grid, 16: lower reinforcing grid, 17: spacing member, 18: spacing member, 19: distribution muscle, 20:
Main muscle, 21: distribution muscle, 22: main muscle, 23: connection end, 24: connection end, 25: upper reinforcement, 26: lower reinforcement, 27: spacing member, 28: spacing member, 2
9: Distributors, 30: Distributors, 31: Dispersors, 32: Dispersors, 33: Connection ends, 34: Connection ends, 35: Upper reinforcement lattice, 36: Lower reinforcement lattice, 37: Spacing Member, 38: spacing member, 39: distribution muscle, 40: main reinforcement, 41: distribution muscle, 42: main reinforcement, 43: connection end, 43a: connection end, 44: main reinforcement, 45: distribution Strength bars, 46: Reinforcement unit for building structure slab, 47: Void material, 48: Void material, 49: Comb-like holding material, 50: Comb-like holding material, 51: Building structure slab reinforcing unit , 52: Reinforcing bar for building structure slabs, 53: Reinforcing bar for building structure slabs, 54: Reinforcing bar for building structure slabs

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 5/32 E04B 5/43 E04C 5/04

Claims (1)

(57) [Claims] A first building structure slab reinforcement unit (10), a second building structure slab reinforcement unit (11), and a reinforced concrete beam (12a) arranged in combination in a predetermined arrangement. The third building structure slab reinforcing bar unit (12) provided adjacent to the building structure slab reinforcing bar that can be connected as a whole via these connecting portions, Reinforcing unit for building structure slab No. 3 (1
The overall width of each of (0) to (12) is 2.5 m or less,
The length is within 12 m, and the first to third building structure slab reinforcement units (1
0) to (12) correspond to a plurality of main muscles (20, 2), respectively.
2, 30, 32, 40, 42) and a plurality of force bars (19,
21, 29, 31, 39, 41) in the form of a grid and fixedly connecting the intersections to form a flat upper reinforcing bar grid (15, 25, 35) and a lower reinforcing grid (16, 26, 41). 36) and the upper rebar grid (15, 25,
35) and the lower reinforcing bars (16, 26, 36) are connected to each other while maintaining parallel intervals.
7, 28, 37, 38), on both sides of the lower reinforcing bar grid (16) of the first building structure slab reinforcing unit (10), the lower reinforcing bar grid (16).
Connecting ends (23) and (24) each having a length greater than 40 times the diameter of the second reinforcing bar (21), and the upper reinforcing bar of the second building structure slab reinforcing unit (11). On one side of the grid (25), the upper rebar grid (25)
A connecting end portion (33) having a length greater than 40 times the diameter of the second reinforcing bar (29), and the lower reinforcing bar grid (26) of the second building structure slab reinforcing unit (11). A connecting end (34) having a length greater than 40 times the diameter of the force bar (31) of the lower reinforcement grid (26) is provided on the other side of the lower reinforcing bar grid (26); A connecting end (43a) is provided on one side of the upper reinforcing bar grid (35) of the unit (12), and the lower reinforcing bar grid (36) of the third building structure slab reinforcing unit (12) is provided. The other side of the distribution bar (41) is connected to the reinforced concrete beam (12a) having a length larger than 10 times the diameter of the distribution bar (41) of the lower reinforcement grid (36) or 150 mm or more. A connection end (43) is provided, and the first to third building structure slabs are further provided. Reinforcement unit (10) to (12) inside the building structures slab reinforcement, wherein each void material is mounted in a fixed state of.